Folder Creation

I'm not sure if this is a bug or not ... when running a sync there's a couple of anomalies (quite possibly these are covered somewhere I haven't looked as well).

Anyway ... none of my folders get created on the client side that I have on my server or through the web client so everything gets put into Inbox. Also, it seems that the messages do not retain their properties IE mail I've already read shows up as unread email.

Is this just the nature of the client? What things are sync'd between server and ZDesktop? (mail filters, folders, messages etc).